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    <title>超链接的伪类选择器</title>
  <style>
    a{
      margin-right: 20px;
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    a:link,a:visited{
      color: #000;
      text-decoration: none;
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      color: #093;
      text-decoration: underline;
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    a:active{
      color: #FC0;
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<a href="#">公司首页</a>
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